Pressure-Sensitive Adhesive Tape

Abstract

Provided is a pressure-sensitive adhesive tape which has a sufficient pressure-sensitive adhesive strength for an adherend, is excellent in heat resistance, and can be easily peeled without leaving a pressure-sensitive adhesive residue on the adherend particularly upon peeling. The pressure-sensitive adhesive tape includes, on a substrate, a pressure-sensitive adhesive layer containing a lipophilic layered clay mineral, in which the layered clay mineral is in a state of being peeled and dispersed, and the interlayer distance of the layered clay mineral is 50 Å or more.

1 . A pressure-sensitive adhesive tape comprising, on a substrate, a pressure-sensitive adhesive layer containing a lipophilic layered clay mineral, wherein the layered clay mineral is in a state of being peeled and dispersed, and the interlayer distance of the layered clay mineral is 50 Å or more. 
     
     
         2 . A pressure-sensitive adhesive tape according to  claim 1 , wherein the layered clay mineral comprises a smectite-based clay mineral and/or a mica-based clay mineral. 
     
     
         3 . A pressure-sensitive adhesive tape according to  claim 1 , wherein the pressure-sensitive adhesive layer comprises an acrylic pressure-sensitive adhesive composition formed of a monomer composition mainly composed of an alkyl (meth)acrylate ester of an alkyl alcohol having 4 to 14 carbon atoms. 
     
     
         4 . A pressure-sensitive adhesive tape according to  claim 3 , wherein 0.1 to 20 parts by weight of the layered clay mineral are incorporated with respect to 100 parts by weight of the acrylic pressure-sensitive adhesive composition. 
     
     
         5 . A pressure-sensitive adhesive tape according to  claim 1 , wherein the pressure-sensitive adhesive layer comprises a silicone-based pressure-sensitive adhesive composition. 
     
     
         6 . A pressure-sensitive adhesive tape according to  claim 5 , wherein 0.1 to 20 parts by weight of the layered clay mineral are incorporated with respect to 100 parts by weight of the silicone-based pressure-sensitive adhesive composition. 
     
     
         7 . A pressure-sensitive adhesive tape according to  claim 1 , wherein the pressure-sensitive adhesive tape is used in producing an electronic part. 
     
     
         8 . A pressure-sensitive adhesive tape according to  claim 2 , wherein the pressure-sensitive adhesive layer comprises an acrylic pressure-sensitive adhesive composition formed of a monomer composition mainly composed of an alkyl (meth)acrylate ester of an alkyl alcohol having 4 to 14 carbon atoms. 
     
     
         9 . A pressure-sensitive adhesive tape according to  claim 2 , wherein the pressure-sensitive adhesive layer comprises a silicone-based pressure-sensitive adhesive composition. 
     
     
         10 . A pressure-sensitive adhesive tape according to  claim 2 , wherein the pressure-sensitive adhesive tape is used in producing an electronic part. 
     
     
         11 . A pressure-sensitive adhesive tape according to  claim 3 , wherein the pressure-sensitive adhesive tape is used in producing an electronic part. 
     
     
         12 . A pressure-sensitive adhesive tape according to  claim 4 , wherein the pressure-sensitive adhesive tape is used in producing an electronic part. 
     
     
         13 . A pressure-sensitive adhesive tape according to  claim 5 , wherein the pressure-sensitive adhesive tape is used in producing an electronic part. 
     
     
         14 . A pressure-sensitive adhesive tape according to  claim 6 , wherein the pressure-sensitive adhesive tape is used in producing an electronic part.